Thanks to the electronic connection the f-stop setting is transferred. Due to this the viewfinder image remains bright, even with closed aperture.

The reverse adapter has a 58mm filter thread. Lenses with other filter diameter can be applied via adapter rings.

Please be aware that the first information of the millimeter in adapter markings refers to the filter diameter of your lens. The second one should always be 58mm for the reverse adapter. E.g. your lens has a filter diameter of 77mm, the correct adapter is the “77mm to 58mm”.

To detach both parts of the automatic retro adapter, please push the little knob aside.

Features:

ideal for macro photography with lenses already available

for all lenses with a filter diameter of 58mm (others have to be adapted)

for all Canon EOS cameras and EF and EF-S lenses (even by third-party suppliers)